The result is expected to be very close, with polls showing the 'No' vote just ahead.

Dairy farmer Sally Williams, from Earlston in southern Scotland, plans to vote 'Yes' in the referendum.

"The Westminster Government in London who are the ones who go to Europe and negotiate our CAP (Common Agricultural Policy) budget and everything on our behalf. They have made it one of their aims to end subsidy.

"So for Scotland and agriculture, where we completely rely on it, even if you had 30 years to phase it out, I'm not being pessimistic, but I still don't think our industry could survive without.

"So to have a government whose aim is to remove a fairly major source of income for your industry, I find it very hard to understand why anybody is prepared to vote 'No', with an agricultural connection."

Ms Williams says she has family who farm in New Zealand, who saw ancillary industries, like vehicle dealerships, vets and hairdressers close down when farming subsidies were abolished, even though the agricultural industry survived.

"It's often quoted up here that for every green pound, so for every pound spent in agriculture means four for the local economy," she said.

"That is why to me we have to have a government in power who really care about the country and not about whatever they think is important in the corridors of Westminster."

But many others disagree with her.

Andrew Farquharson's family has farmed the Finzean Estate, in Aberdeenshire in Scotland's west, for 400 years.

The Estate encompasses farmland, moorland and forestry and is managed as an integrated family business.

Mr Farquharson thinks the Scottish Parliament performs well as it is.

"It's such an important vote for us all. I will be voting 'No', really because I just feel there's too many unanswered questions within the 'Yes' camp.

"Economically they have left too many grey areas for us. The currency issue is one of the major ones.

"I think the Scottish Parliament does a good job at the moment, and I think if it was extended powers to the Scottish Parliament, there's no reason why that system couldn't carry on."